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2 X 12SL7GT ULTRON TUBE. NEW OLD STOCK.
BRAND: ULTRON
CHROME PLATES, SOLID GETTER, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
104/126% EMISSION (EM) 100/106% TRANSCONDUCTANCE (GM) 0.7/1.1mA/V GAS
104/121% EMISSION (EM) 106/112% TRANSCONDUCTANCE (GM) 0.1/0.1mA/V GAS